Why this Notice Error?

Question

here is my code and its working

<?php
        $num = 5;
        $location = 'tree';
        define(format,'There are %d monkeys in the %s');
        echo sprintf(format, $num, $location);
        ?>

but i'm getting

NOTICE Use of undefined constant format - assumed 'format' on line number 6

There are 5 monkeys in the tree

Why?

Answer 1

You need to insert '' while defining a variable

<?php

 $num = 5;
 $location = 'tree';
 define('format','There are %d monkeys in the %s');
 echo sprintf(format, $num, $location);

?>

Answer 2

You need to add ' s to avoid the Notice

define('format','There are %d monkeys in the %s');

Standard constant names are in capital letters. You should do -

define('FORMAT','There are %d monkeys in the %s');

define()